Really bad pictures but here goes. This dog was AMAZING. He was so incredibly athletic and fast. He could jump very high. He put most bcs I see around to shame several times over doing disk dog stuff. I thought maybe he was an Am Bull, but he has a docked tail.

He looks kinda big for a Boston but it could just be the distance of the pic throwing me off. I was gonna say Olde English Bulldog but I don't know how athletic they are because I don't know what a well bred one looks like. Perhaps the dog is a mix.